Window-fastener.



Wzrzvgsws- No. 860,770. PATENTED JULY 23, 1907.

@- TAIT.

WINDOW FASTENER.

APPLICATION FILED JULY 23, 1908.

0 1 Z @Z $552145. [fi /6701a.

W A TTORNEYS THE NORRIS PETERS C5,, WASHINGTON, D- C.

UNITED STATES CASSIUS TAIT, OF KANKAKEE, ILLINOIS.

WINDOW-FASTE NER.

Specification of Letters Patent.

Patented July 23, 1907.

Application filed July 23,1906- Sfi N 327,423-

To all whom it may concern.-

Be it known that I, OASSIUS TAIT, a citizen of the United States,residing at Kankakee, in the county of Kankakeo and State of Illinois,have invented a new and useful Window-Fastener, of which the followingis a specification.

This invention relates to a fastening or locking device for tworelatively movable members and is designed more particularly for use asa sash fastener which positively locks the sash in closed position, orfrom being opened, and yieldingly locks them open so that the sashes canbe closed by merely pushing on the up per sash and pulling on the lowerone.

One of the objects of the invention is to provide a fastening device ofthis character which is of simple and improved construction, inexpensiveto manufacture, easy to operate, and readily applied to ordinary windowsashes without requiring a cutting away or mutilation of the latter infitting the members of the fastening device.

A further object of the invention is the provisionof a plate havingratchet teeth for attachment to the upper sash and a spring actuatedbolt on the lower sash cooperating with the ratchet teeth to permit thesashes to be held in any desired open position or closed position, andto be positively locked from being opened from the outside.

With these objects in view, and others, as will appear as the nature ofthe invention is better understood, the invention comprises the variousnovel features of construction and arrangement of parts, which will bemore fully described hereinafter and set forth with particularity in theclaims appended hereto.

In the accompanying drawing, which illustrates certain of theembodiments of the invention, Figure 1 is a perspective view of thefastening device employed as a sash fastener, portions of the windowsashes being shown and locked in closed position by the fastener. Fig. 2is a transverse section of Fig. 1, the plane of the section beingthrough the upper part of the casing or housing for the locking bolt.Fig. 3 is a fragmentary perspective view of the ratchet teeth. Fig. 4shows in perspective the locking bolt and casing therefor, disassembled,the top part of the casing being shown in a lifted position. Fig. 5 is alongitudinal section of a modified form of locking bolt. Fig. 6 is aperspective view of the modified form. Fig. 7 is a perspective view ofthe bolt removed. I

Corresponding parts in the several figures are indicated throughout bysimilar characters of reference.

In the present instance, I have elected to illustrate the invention as asash fastener, but I desire to have it understood that the'same is notnecessarily limited to this use.

Referring to the drawing, A designates a portion of an upper sash and Ba portion of a lowersash. To the side rail 1 of the upper sash issecured, by means of screws 2 or equivalent means, a plate 3 havingtheserrations or ratchet teeth 4 along one of its edges. The teeth orserrations are formed in a marginal web or flange that is disposed atright angles to the body of the plate, as clearly shown in Fig. 2. Theplate is presented to the front face of the rail 1 with the serrationsor teeth 4 in an outward direction. It may be here remarked that theplate 3 may be used in connection with the middle rail of the sash, ifpreferred.

The bolt of the fastening is mounted on the top rail 5 of the lower sasheither at the end or the middle thereof, according to whether theserrated plate 3 is mounted on the side or the middle rail of the uppersash. The belt 6 is mounted in a casing or housing comprising a baseplate 7 and a box 8. The box 8 is open at its ends and bottom and isprovided with laterally extending lugs 9 arranged on the side wallsthereof adjacent the bottom edges. These lugs are provided with recesses10 in their bottom surface and at their outer ends are perforated, as at1].. The bottom plate 7 fits into the open bottom side of the box 8 andis provided with arms 12 that assemble in the slots 10 of the lugs 9.The arms 12 are provided with perforations 13 that register with theperforations 11 so as to receive screws 14, or other securing means, forattaching the casing to the top rail 5, as clearly shown in Fig. l. Thelongitudinal axis of the casing is disposed at right angles to the planeof the sashes, and the bolt 6 is mounted Within the casing to movelongitudinally with regard to the latter. The bolt 6 is provided with ahead 15 that is of angular shape to correspond to the serrations orteeth 4. The head end of the bolt is adapted to project through the rearopen end of the casing and the opposite end projects through the frontend of the easing and is provided with an enlargement 16 that forms athumb piece or button for actuating the bolt. The bolt is normallymaintained in an indrawn position by means of a helical compressionspring 17 arranged within the casing. Adjacent the rear end of the baseplate is an upwardly extending lug or projection 18 that forms anabutment for one end of the spring. The opposite end of the spring abutsa laterally extending projection or lug 1.9 adjacent the front end ofthe bolt. The compression spring is disposed with its axis parallel tothe longitudinal axis of the casing and with the line of movement of thebolt. The front end of the base plate is also provided with an upwardlyextending projection 20 that serves as an end wall for closing the frontend of the casing, and also as a stop for limiting the inward movementof the bolt. The body of the bolt 6 is rectangular in cross section anddisposed with its long cross sectional dimension vertical. The movementof the bolt is guided by the bottom plate and the top wall of the boxand by one of the side walls of the latter and the corresponding ends ofthe projections 18 and 20 of the base plate. The head 1.5 and projection19 of the bolt extend at right angles to the length of the latter in thesame direction and in overlapping relation to the projections 18 and 20,respectively.

As shown in Figsnl and 2, the bolt casing is disposed centrally in frontof the serrations or ratchet teeth 4, and the body portion of the boltadjacent the head 15 is disposed along the side edge 21 of the plate 3.The head 15 will thus extend along the rear of the plate 3 and cooperatewith the serrations or ratchet teeth 4. The long bevel 22 of'the ratchetteeth is disposed downwardly so that the bolt can slide downwardly overthe teeth 4, or the plate 3 upwardly with respect to the bolt. Thispermits of one or the other, or both, of the sashes to be closed bypushing upwardly on the upper sash and pulling downwardly on the lowersash without having to press the button 16 inwardly to disengage thebolt from the teeth. The spring 17 is of suificient tension to hold thehead 15 in locking engagement with any of the teeth 4, so that the oneor both sashes will be held open, and to permit the bolt to yield andslide over the teeth during the closing of either or both sashes. In anyposition of the sashes, the fastening acts as a positive lock forpreventing the sashes from being opened by merely exerting a pushing o:pulling movement on th em. The fastening thus prevents the sashes frombeing opened from outside the window. I In order to open the sashes, thebolt must first be pressed inwardly, as by means of a thumb pressing onthe button 16. This moves the head 15 rearwardly so as to lie out of thepath of the teeth 4. With the thumb still pressing on the button 16, thesash or sashes are opened to the desired extent and then the pressure onthe button 16 is relieved, so that the bolt can be indrawn under theaction of the spring 17 and interlock with the adjacent tooth of theplate 3. It will thus be seen that either one'or both sashes may beclosed without any attention being given to the fastening device. Toopen the sashes, however, the fastening is first required to be unlockedand after the sashes are opened, the fastening will automatically lockthe latter in position.

The principle of operation underlying the modified construction shown inFigs. 5 to 7 is the same as that already described, so that a meredescription of the structural differences of the modified form offastening is deemed sufficient. The casing 23 of the fastening isconstructed without the base plate and is provided with a slot 24 in itstop wall through which the finger piece 25 of the bolt extends. "Thehead 26 of the bolt is of the same shape as that previously described soas to operate in connection with a serrated plate similar to that shownin the main construction. The body portion of the bolt is provided witha rectangular slot 27 into which depends a lug or projection 28 on thetop Wall of the casing 23, as shown in Fig. 5. In the slot 27 isarranged a helical compression spring 29 which at its front end abutsthe front wall of the slot 27 and at its rear end the projection 28.This spring maintains the head 26 of the bolt in engagement with theteeth 31 shown in dotted lines in Fig. 5. The finger piece 25 projectsupwardly through the slot 24 from the front end of the bolt, and itcooperates with the walls of the slot to hold the bolt in the casing.

l have described the principle of operation of the invention, togetherwith the apparatus which 1 now consider to be the best embodimentthereof, but I desire to have it understood that the apparatus shown ismerely illustrative, and that various changes may be made, when desired,as are within the scope of the invention.

What is claimed is:-

1. In a sash fastener, the combination of a plate provided withserrations, with a bolt, a laterally extending head thereon, a laterallyextending abutment adjacent the end of the bolt opposite from the head,a base plate having upwardly extending lugs forming abutments andlaterally extending apertured lugs, a compression spring heldbetween'the abutment of the bolt and one of the lugs of the base plate,a casing having an open bottom to fit over the bolt and base plate andprovided with re cessed apertured lugs which receive the lateral lugs ofthe base plate, and fastening devices extending through the apertures ofthe lugs of the base plate and easing.

2. The combination of two relatively movable members, with a fasteningdevice comprising a plate secured to one of the members and providedwith ratchet teeth extending from one side thereof, and a spring pressedbolt mounted on the other member and disposed at the side of the plateopposite from that having the teeth to cooperate with the latter forpermitting of relative movement of the members only in one direction.

3. The combination of two relatively movable members, with a fasteningdevice therefor comprising a plate having a longitudinal web extendingrearwardly therefrom and provided with serrations, means for securingthe plate to one of the members, a casing of inverted U-shaped-erosssection secured to the other member and provided with open ends, a baseplate disposed in the casing and having an upwardly projecting lugpartly closing one end of the casing, a bolt guided longitudinally inthe casing and having its extremities extending from the open endsthereof and provided with a lug adapted to abut the said lug of the baseplate to limit the forward movement of the bolt, a head on the rear endof the bolt extending behind the plate to engage the serrations thereof,a thumb piece on the front end of the bolt, and a spring in the casingand arranged to yieldingly hold the bolt with its head in engagementwith the serrations.

4. A fastening comprising a box having laterally ex- -tending slottedand perforated lugs, a plate having arms disposed in the slots of thelugs and perforations registering with those of the lugs, a bolt mountedin the box, and a spring arranged to normally hold the bolt indrawn.

A fastening comprising a box open at its bottom, a base plate closingthe bottom of the box and provided with a pair of spaced projectionsforming respectively a stop and an abutment, a bolt mounted at one sideof the projections for longitudinal movement in the box and providedwith a projection forming an abutment adapted to engage the stop, and acompression spring arranged with its ends engaging the abutments.

In testimony that I claim the foregoing as my own, I have hereto afIixedmy signature in the presence of two witnesses.

CASSIUS TAl'l.

Witnesses .T. E. HEFFLEY, GEORGE E. JACKSON.

